An electrostatic potential study of asymmetric ionic conductivity in Li2B4O7 crystals

Su Jae Kim, Won Kyung Kim, Yong Chan Cho, S. Park, I. K. Jeong, Y. S. Yang, Yoshihiro Kuroiwa, Chikako Moriyoshi, Hiroshi Tanaka, Masaki Takata, Se Young Jeong

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

This study investigated the bonding nature and electrostatic potential of asymmetric Li ionic mobility in Li2B4O7 crystals using the maximum entropy method (MEM) combined with Rietveld refinement and Ewalds technique. Compared with the interaction between oxygen and boron, Li+ ions exhibited weak interactions with both oxygen and boron. Furthermore, electrostatic-potential-distribution analysis showed that Li+ ions had a much weaker interaction with the matrix along the c-axis channel, suggesting that higher ionic conductivity occurred along the c-axis than along the a- and b-axes.

Original languageEnglish
Pages (from-to)649-652
Number of pages4
JournalCurrent Applied Physics
Volume11
Issue number3
DOIs
Publication statusPublished - 2011 May
Externally publishedYes

Keywords

  • Anisotropic ion conduction
  • Electron charge density distribution
  • Electrostatic potential
  • Li ion conduction
  • MEM/Rietveld

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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